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i . Table 2. Groundwater Chemical Data Well No Date TPHG" Benzene Toluene Ethylbenz Xylene Fuel Ox VOC ug/l MW-1 No Data-Monitoring Well Destroyed, June, 1999 MW-2 10/5199 NO NO NO NO NO NO Yes MW-3 10/5/99 NO ND NO NO NO NO Yes MW4 10/5199 r NO ND NO NO NO NO NO Blank 1015199 NO ND NO NO NO NO NO ND-None detected NA-Not Analyzed ugll- micrograms per liter Fuel Ox -Fuel oxygenates including MTBE by Method 8260 Yes-See text below and Table 3 Discussion of Latest�Quarterly Monitoring Groundwater flow direction appears consistent with historically observed trends Neither fuel nor MTBE contaminants were observed in any well, including MW-4 Fluctuations in contaminants are attributed to residual contaminants desorbing into the groundwater from the soil strata in the immediate vicinity of the former tank pit Aquifer discharge has probably contributed to desorbtion, and volatile components continue an overall declining trend Well MW-1 was destroyed during the soil excavation to remove residual contaminants which had historically been observed at MW-1 The monitonng well will be replaced if required by PHS-EHD Very low concentrations of Tetra chi oroethene (PCE), Trichloroethene (TCE) and cis-1,2-Dichloroethene were observed in upgradient well MW-2 and "side-gradient" well MW-3 VOC compounds were not observed at MW-4 The VOC compounds were observed at concentrations dust above the detection lima The presence of VOC at MW-3 could be suggestive of the leading edge of another contaminant plume (having first amved at upgradcent well MW-2 This contaminant group is strongly suggestive of a dry cleaner source, and not from M and M Response to PHS EHD Letter Dated July 23, 1999 Res onse to Physical Well Inspection and Well Owner Contact WRIGHT has reviewed the PHS-EHD recommended suggestion that the wells identified by the well search be inspected and well owners contacted for well status It is Wnght's opinion that this additional task of well inspection is not warranted by the plume size and proximity to these wells identified in the search (as discussed below) It is the property owners opinion that these well inspections only be performed if State Fund will reimburse all associated costs of well inspections Therefore, WRIGHT declines to perform this work at this time WRIGHT will, if directed, seek pre-approval of costs from the State Fund with a well inspection survey work scope and once approved, conduct such a survey The well search has identified the known wells within the 2000-foot radius, and provides the information as requested by PHS-EHD A "physical inspection and owner interviews/contact" approach suggested by PHS-EHD is inappropriate given the distance to wells and small size of the plume The type of well study such as that requested could involve weeks or months of time awaiting owner responses (if any) and additional costs for permission of entry, copying logs and well details, survey forms, interviews, • inspection of casings, video logs, etc The nearest City wells (about 800-feet and 1,000 feet respectively) are side-gradient to the site, and the nearest downgradient well is at the extreme edge of